2015 GMC Sierra 2500HD

What owners should know

Covers 2015–2019 · 6.6L Duramax diesel (LML 2015–2016, L5P 2017–2019) and 6.0L V8 gas · Updated 2026-10-01

Researched from owner forums and NHTSA complaints and written by Know Your Truck. These are patterns in what owners report, not a guarantee about any particular truck.

Common failures & how to fix them

Parts and video buttons search for your 2015 GMC Sierra 2500HD. Always confirm a part fits using your VIN. Brakes, steering, fuel and airbag work affects your safety, so if you're not sure, have a qualified mechanic do it.

• 2015–2016 Duramax fuel pump (CP4) failure

  Best left to a shop

  Signs: Sudden stalling or no-start, low fuel pressure codes such as P0087.

  Fix: Prevention: change the fuel filter on schedule and buy fuel from busy stations. Some owners replace the CP4 with a different pump design as prevention. A failed pump usually means a full fuel system replacement at a diesel shop.

  Shop: Duramax fuel filterShop: Duramax CP3 conversion kit▶ How-to videos

• Loose brake pedal (2015–2016)

  Dealer (recall)

  Signs: The brake pedal feels loose or doesn't work right.

  Fix: Covered by GM recalls for the brake pedal pivot nut.

  May be covered free by recall 16V069000 / 18V578000. Check the VIN at nhtsa.gov/recalls.

• Block heater cord fire risk (2017–2019 diesels)

  Dealer (recall)

  Signs: A burnt or melted block heater cord or plug.

  Fix: Covered by GM recalls. Don't use the block heater until it's checked.

  May be covered free by recall 19V328000 / 21V496000. Check the VIN at nhtsa.gov/recalls.

• 'Service trailer brake system' warning

  Easy DIY

  Signs: Trailer brake warnings that cut the trailer brakes while towing.

  Fix: Start with the simple things: clean and inspect the 7-pin trailer connector and the trailer's wiring. If it continues, have a dealer check the trailer brake module.

  Shop: 7 pin trailer connector▶ How-to videos

• L5P cracked intercooler pipe

  Easy DIY

  Signs: A loud pop, then low power and limp mode.

  Fix: Replace the plastic charge pipe. Many owners upgrade to a metal pipe.

  Shop: L5P Duramax intercooler pipe▶ How-to videos

Recalls

A recall doesn't mean a truck still has the problem. Enter the truck's VIN at nhtsa.gov/recalls or ask a dealer to see whether the repair was done.

• Air Bags:Side/Window:Curtain:Inflator

  Jul 2021 · #21V504000

  General Motors LLC (GM) is recalling certain 2015-2016 GMC Sierra 1500, 2500, 3500, and Chevrolet Silverado 1500, 2500, and 3500 trucks. The roof-rail air bag (RRAB) inflator end cap may detach from the inflator, or the inflator sidewall may rupture.

  Risk and fix

  Risk: A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.

  Fix: Dealers will replace the left and right side RRAB modules, free of charge. Interim owner notification letters informing owners of the safety risk were mailed on August 18, 2021. Owners will receive a second notice when the remedy is available. Phase I owner notification letters were mailed on May 5, 2022. Phase II owner notification letters are expected to be mailed on May 31, 2022. Owners may contact GMC customer service at 1-888-988-7267 or Chevrolet customer service at 1-800-222-1020. This recall supersedes NHTSA recall number 20V-736. GM's number for this recall is N202324251.

• Air Bags:Side/Window:Curtain:Inflator

  Nov 2020 · #20V736000

  General Motors LLC (GM) is recalling certain 2015-2016 GMC Sierra 1500 and Chevrolet Silverado 1500 and 2015 GMC Sierra 2500 and 3500, and Chevrolet Silverado 2500 and 3500 trucks. The roof-rail air bag (RRAB) inflator end cap may detach from the inflator.

  Risk and fix

  Risk: If the end cap separates from the inflator, the compressed gas will escape and the end cap can be propelled into the vehicle, increasing the risk of injury or a crash.

  Fix: GM will notify owners, and dealers will replace the RRAB modules on the left and/or right side, free of charge. Interim owner notification letters were mailed on December 22, 2020. Owners may contact GMC customer service at 1-888-988-7267 or Chevrolet customer service at 1-800-222-1020. Note: GM filed a new recall, number 21V-504 that supersedes this recall. All vehicles previously recalled under 20V-736 will now be repaired under the new recall number 21V-504. GM's numbers for this recall are N202309680, N202309681, and N202309682.

• Service Brakes, Hydraulic:Pedals And Linkages

  Aug 2018 · #18V578000

  General Motors LLC (GM) is recalling certain 2015-2016 Chevrolet Silverado 2500, 3500, 1500 Crew Cab Special Service, Tahoe Police Pursuit/Special Service, GMC Sierra 2500, and 3500 vehicles. The brake pedal pivot nut may loosen, causing the brake pedal to be loose or inoperative.

  Risk and fix

  Risk: If the brake pedal becomes loose or inoperative, the driver may be unable to stop the vehicle by using the brake pedal. Additionally, a loose pedal may also interfere with the accelerator pedal. Either condition may increase the risk of a crash.

  Fix: GM will notify owners, and dealers will add adhesive to the nut and reinstall the nut with increased tightness, free of charge. The recall began October 3, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 18278. Note: The vehicles in this recall need this additional remedy despite being covered by recall 16V069 for brake pedal loosening.

• Air Bags:Frontal

  Jul 2017 · #17V437000

  General Motors LLC (GM) is recalling certain model year 2014-2016 Buick Lacrosse and Chevrolet Spark EV, Caprice PPV and SS vehicles, 2014-2017 Buick Encore and Chevrolet Corvette, Silverado 1500 and GMC Sierra 1500 vehicles, 2015-2016 Cadillac Escalade and Escalade ESV, Chevrolet Tahoe, Trax, Suburban and Silverado 2500 and 3500 and GMC Yukon and Yukon XL vehicles, and 2015-2017 GMC Sierra HD 2500 and 3500 vehicles. While being previously remedied for recall 16V-651, the affected vehicles may not have received the complete software update necessary to remedy the recall condition. Without the update, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.

  Risk and fix

  Risk: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.

  Fix: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on August 4, 2017. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 17287.

• Air Bags:Frontal

  Sep 2016 · #16V651000

  General Motors LLC (GM) is recalling certain model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and Cadillac Escalade ESV vehicles and 2014-2017 Chevrolet Corvette, Silverado 1500, Trax, Caprice Police Pursuit Vehicle, GMC Sierra 1500, Buick Encore, and 2014-2016 Buick Lacrosse, Chevrolet Spark EV and SS vehicles. In the affected vehicles, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.

  Risk and fix

  Risk: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.

  Fix: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on October 13, 2016. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 16007.

• Service Brakes, Hydraulic:Pedals And Linkages

  Feb 2016 · #16V069000

  General Motors LLC (GM) is recalling certain model year 2015-2016 Chevrolet Silverado 1500, 2500, and 3500 heavy duty trucks manufactured October 1, 2013, to February 1, 2016, 2015-2016 Chevrolet Tahoe Police Pursuit Vehicles (PPV) manufactured March 1, 2014, to February 1, 2016, and 2015-2016 GMC Sierra 2500 and 3500 heavy duty trucks manufactured October 29, 2013, to February 1, 2016. On the affected vehicles, the brake pedal pivot nut may loosen, causing the brake pedal to be loose or inoperative.

  Risk and fix

  Risk: If the brake pedal becomes loose or inoperative, the driver may be unable to stop the vehicle by using the brake pedal. Additionally, a loose pedal may also interfere with the accelerator pedal. Either condition may increase the risk of a crash.

  Fix: GM will notify owners, and dealers will add adhesive to the brake pedal pivot nut and reinstall with an increased torque, free of charge. The recall began on March 14, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is 20760.

Owner complaints by area

Reports owners filed with NHTSA. They aren't verified, and one complaint can mention more than one area. Tap an area to read the most recent ones.

• Exterior Lighting57

  1 involved a crash

  • Filed Jan 2022

    Headlights were about as bright as a candle while using high beams changed the bulbs and used a head light restoration kit and within a week headlight lenses were hazed over again high beams are no brighter than low beams

  • Filed Jan 2019

    THE HEADLIGHTS ARE COMPLETELY INADEQUATE. IF YOU ARE TAKING A TURN AT NIGHT, THE LIGHTS CONTINUE TO STAY STRAIGHT WITH THE DIRECTION OF THE VEHICLE INSTEAD OF FOLLOWING THE VEHICLE SO THAT YOU END UP TAKING A TURN BLINDLY AND CANNOT SEE THE CURB OR EDGE OF THE ROAD. IT IS A TOTALLY UNSAFE SITUATION. WE HAVE FOUND THAT YOU MAY HAVE A BIT MORE VISIBILITY IF YOU RUN WITH THE FOG LIGHTS ON, BUT VERY LITTLE IMPROVEMENT. PLEASE FIND A SOLUTION, ADDITIONAL HEADLIGHT, AS THIS TRUCK IS VERY SCARY TO DRIVE AT NIGHT.

  • Filed Dec 2018

    THE PROJECTOR HEADLIGHTS THAT ARE INSTALLED IN THIS VEHICLE FROM THE FACTORY DO NOT PROVIDE ADEQUATE VISIBILITY AT NIGHT. I AM UNABLE TO SEE MORE THAT 15 FEET IN FRONT OF THIS VEHICLE FROM A SAFETY PERSPECTIVE. I HAVE RETURNED THE VEHICLE TO THE DEALER MULTIPLE TIMES FOR REPAIR. THEY CHANGED THE BULBS BUT STATED THEY ARE WORKING WITHIN DESIGN SPECIFICATIONS AND SAID THAT GM HAD USED A NEW TYPE OF LIGHTING SYSTEM IN 2015 BUT REALIZED IT IS WAS NOT ADEQUATE AND REDESIGNED IN LATER MODEL YEAR. IF GM REALIZES THEY HAVE A PROBLEM WHY WILL THEY NOT REPAIR VEHICLES THAT THEY SOLD PRIOR TO REALIZING THEIR MISTAKE? IN THE RAIN AT NIGHT THERE IS VIRTUALLY ZERO VISIBILITY. GM NEEDS TO FIX THIS PROBLEM AS IT IS A MAJOR SAFETY ISSUE.

  • Filed Sep 2018

    RIGHT REAR TURN SIGNAL BOTTOM SOCKET HEATS UP AND CAUSES AN OPEN TO THE TOP TURN SIGNAL SOCKET SO THE TOP TURN SIGNAL QUITS WORKING AND CAUSES THE SYSTEM TO HYPER FLASH.AND INDICATE INOPERATIVE RIGHT REAR TURN SIGNAL IN MESSAGE CENTER. ONLY REPAIR IS TO REPLACE WIRING HARNESS AND SOCKETS. SYSTEM WORKS FINE IN COLD TEMPERATURES AS THE SOCKET DOES NOT HEAT UP ENOUGH. HAPPENS WITH VEHICLE STATIONARY AND IN MOTION. CONTACTED GM ABOUT IT AND GOT NOWHERE.

  • Filed Dec 2017

    THE HEADLIGHTS ARE SO DIM THE TRUCK IS DANGEROUS TO DRIVE AT NIGHT. I DROVE IN A SNOW STORM LAST NIGHT AND I COULDN'T SEE AHEAD OF ME. I WAS DRIVING ON A HIGHWAY AT 45MPH.

  • Showing the 5 most recent of 57.
• Power Train15

  3 involved a crash · 1 involved a fire

  • Filed Apr 2024

    The truck is a 2015 GMC Sierra 2500 HD. With less than 51,000 miles, the transmission is gone due to a design flaw. Around march 8th, the transmission went out when I hydroplanned on a two lane road. Haley GMC Airport was wanting $6700 for a new transmission. I contacted GMC and they offered a 15% discount after raising the price to over $7500. GMC has replaced and volunteered recall on their 2015 1500 and 2015 2500 8 speed transmissions but will not do anything about the 2015 2500 6 speed transmission. The transmission where I received a second opinion advised that they changed the transmission on the 2015 after realizing there was a design flaw. I feel that myself and many others whose transmissions died before 100,000 due to GMC design should not pay full price for a new transmission. If this is not the correct channel, please let me know. thank you.

  • Filed Sep 2023

    Shifting started to make a loud clunking sound. Then the vehicle wouldn't shift out of 3rd gear. The engine check light came on and the code determined it to be a faulty transmission control module (TCM). When looking at the TCM, I also noted that the TCM was very hot and the nearby cable cover had melted. When researching the issue, it was discovered that GMC Sierra 2500 and 3500, years 2009 - 2015 were having this same issue all over the continent. Resulting in a massive back order and leaving drivers stranded. There was no warning lights or sounds before my power train froze up.

  • Filed May 2023

    I am having a issue with a low milage GMC Sierra. The truck is a 2015 with 24,000 miles. When it was produced the truck had a 100,000 mile warranty but has since lasped in time. The transmission on this truck is a 6l90 which has had several know issues that gm is aware of. This service bulletin is just highlight of the issue gm bulletin 19-na-153. I've talked with several transmission shops and event saw a few posted online about the transmission issue, my issue is gm will not stand behind their product, I have contacted GM directly and gotten no where. During my conversation with the GM reps on the phone they did agree the transmission should not have blown at the milage. My truck is garage kept, doesn't go outside in the rain or snow. I know there is a class action for the Allison transmission and the 8 speed but not the 6 speed that I'm aware of.

  • Filed Dec 2022

    On November 14th, while commuting home from work, my transmission failed while I was stopped at a red light. After the light turned green, my car would not move when I pushed my foot on the gas. The engine would rev up but nothing would happen. I turned off the engine and re-started several times but the car would never move. I eventually gave up and turned over my emergency blinkers and started calling tow trucks. I was stuck in the center lane of a 4-lane road road at a very busy interstate interchange during rush hour. These were incredibly unsafe conditions as the location of my vehicle almost caused several accidents. It took over 3 hours for a tow truck to show up, move my vehicle from the busy road, and tow it to the local dealer. After investigating, the dealer said the transmission pump blew apart of sent metal throughout the transmission and caused it to be inoperable. There were no warning lamps, messages, or other symptoms prior to this occurrence.

  • Filed Mar 2022

    Wife and daughter took the pickup to town. While returning home wife noticed a noise from the front end. She slowed down to turn and the whole tire with rotor came off the pickup causing the brake line to get ripped off and stating a fire. Damaged the running board and rocker panel along with the cv axle and other numerous parts.

  • Showing the 5 most recent of 15.
• Electrical System12

  4 involved a fire

  • Filed Jan 2026

    Odometer Fraud. The contact purchased a 2015 GMC Sierra 2500. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 189,458 and the contact stated he discovered on Carfax that mileage was 188,052; however, the contact discovered that the mileage was 112,708.

  • Filed Jul 2024

    Electric trailer brake control modular is malfunctioning on my 2015 GMC Sierra Denali 3500. Multiple of sources told me this is a common problem with this generation of GMC.

  • Filed Mar 2023

    The contact owns a 2015 GMC Sierra. The contact stated that when doing the initial start, the rear of the vehicle began smoking and caught on fire. The contact turned off the vehicle and the fire settled however shortly after the rear window fractured. There were no injuries and no medical attention needed. There was no fire report. The contact had taken the vehicle to the dealer who stated that the window needed to be replaced and there was a Canadian recall (Manufacturer Number N192220470 ) for the rear windows defrost failing. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 152,000.

  • Filed Oct 2022

    Water intrusion from antenna ran down into my wires causing corrosion in my electrical harness. Truck will throw code p2138 and go into reduced power mode. Very dangerous when you are in traffic. Truck will not go over 15mph when this happens. This has been a problem intermittently since I have owned the truck at 119000 miles . Gotten progressively worse.

  • Filed Oct 2022

    I was driving down the road after turning on the rear window defrost. The cab of the truck filled with smoke billowing from the back seat. I pulled over and turned the truck off. I got into the back seat to try to identify what was on fire, and noticed the lines of the rear window defrost system were actually smoldering. Then one of the rear windshield panels exploded in my face. Upon reading online, it looks like a recall was issued for this same problem in Canada but not the USA.

  • Showing the 5 most recent of 12.
• Steering11

  • Filed Mar 2024

    The contact owns a 2015 GMC Sierra. The contact stated that while driving at an undisclosed speed, he became aware that the electronic power steering was not functioning properly, requiring increased effort to maneuver the vehicle. The vehicle returned to normal functionality, but the failure became a regular occurrence. The power steering warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 18V586000 (Steering), but the VIN was not included. The manufacturer was notified of the failure but did not assist. The failure mileage was 90,000.

  • Filed Aug 2023

    The contact owns a 2015 GMC Sierra 1500. The contact stated while driving approximately 35 MPH, the message "Power Steering Assist" was displayed, and the steering wheel became very difficult to turn in either direction. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure and informed the contact that the vehicle was not included in NHTSA Campaign Number: 14V719000 (Steering). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 131,890.

  • Filed Dec 2020

    THE POWER STEERING GOES OUT WHEN TURNING. THIS IS HAPPENING MORE AND MORE FREQUENTLY. 2014 GMC TRUCKS HAVE A RECALL (#14743) ADDRESSING THIS POWER STEERING ASSIST ISSUE. GMC SAID THAT I NEED TO GET IT FIXED AT MY COST.

  • Filed Dec 2017

    WHILE SLOWING DOWN MAKING A LEFT OR RIGHT TURN IT WILL NOT TURN. IT'S AS IF THE POWER STEERING MALFUNCTIONS FOR A SECOND. IT CAUSED ME TO "OVERSHOOT" A PARKING SPACE IN THE CITY AND HAVE TO BACK UP AND TRY AGAIN. THIS HAS HAPPENED SEVERAL TIMES. I HAVE AN APPOINTMENT WITH GMC TO HAVE IT CHECKED OUT. THIS IS VERY DANGEROUS.

  • Filed Aug 2017

    POWER STEERING INTERMITTENTLY GOES OUT ON LOW SPEED, LOW ENGINE RPM, RIGHT HAND TURNS. I HAVE HAD VEHICLE TO DEALER TO HAVE ISSUE FIXED ON MAY 16, 2017. THEY INDICATED THEY COULD NOT DUPLICATE PROBLEM. MODEL YEAR 2014 HAVE BEEN RECALLED FOR THIS ISSUE, BUT NOT 2015 MODEL YEAR TRUCKS

  • Showing the 5 most recent of 11.
• Fuel/Propulsion System11

  • Filed Nov 2023

    Truck has a CP4 injection pump and they go bad and cost $15,000-$20,000 to repair and if that happens I owe money on the truck and would have to get a loan or figure something out and still have to make a payment on something I can’t even drive! They need to recall it and swap them out to a CP3 and be done with it. Why wait until it cost 10s of thousands of dollars when they can get it done for $3,500 at the most?

  • Filed Jul 2023

    While driving down the highway at 60 mph, the truck stumbled then completely died. After coasting to a stop truck would not restart. Towed to a repair shop to find out the Bosch CP 4 fuel pump exploded and contaminated the whole fuel system with metal shavings. A very expensive and lengthy repair. GM has known there is issues with these parts, but has failed to recall and fails to cover repair costs. Other manufacturers using the same part have issued recalls. While I was able to safely the get vehicle to the side of the road, the failure could’ve resulted in an accident causing personal injury or property damage.

  • Filed Aug 2022

    While driving to work with my workers and I on HWY going 70 mph pickup just turned off on me and no longer started up. Took to Mechanic and said it was the Bosch CP4 failure. Metal debris flooded our entire high-pressure fuel system. Had to get replacement of fuel lines, fuel rails, pump and injectors and the removal/flushing of the fuel tank. Our total repair is over $12,000. which we don't have. Mechanic just finished repairing it after 11 month's but we don't have the $ to get it out from shop.

  • Filed Dec 2021

    While exiting off ramp of the interstate my truck just completely shut down. After several towing bills to different mechanics to verify the problem, it was the cp4 pump system ! Over $13000 in repairs , towing , and rental fees

  • Filed Apr 2021

    DRIVING DOWN THE INTERSTATE AND MY CHANGE FUEL FILTER LIGHT CAME , AND WITHIN 20 MINUTES TRUCK WENT INTO LIMP MODE. PULLED OVER AND CHANGED FUEL FILTER BUT DIDN'T FIX THE ISSUE. TRUCK IS CURRENTLY AT DEALERSHIP WAITING TO FIND OUT DIAGNOSIS

  • Showing the 5 most recent of 11.
• Unknown or Other10

  1 involved a crash

  • Filed Mar 2026

    After starting the vehicle, I turned on the rear defrost button and within a few minutes the rear window started producing smoke inside the vehicle. I turned the truck off immediately and then approximately 30 seconds later, the rear window on the passenger side shattered. There is a recall that was issued for this exact problem but when i contacted the dealership, I was informed that the recall applied to Canadian vehicle models only and that there was no recall issued in the U.S. for this problem. I believe that there was a great risk for my family's safety as my child sits directly in front of this window and presented an injury risk to her, as well as the overall fire risk that could have occurred if I had not noticed the issue immediately. There were no warnings before the incident occurred. I had to pay out of pocket to have the window replaced.

  • Filed Jan 2026

    I have went to a dealership to try and trade this vehicle in and they have informed me that this vehicles odometer has been rolled back prior to me purchasing it. It was not disclosed to me from Bob Rorhman Hyandia that this had happened.

  • Filed Dec 2024

    Had tailgate switch safety recall completed in June 2024. Beginning November 25th, 2024, tailgate switch began randomly opening tailgate while driving and parked with vehicle turned off. The lower “push button” in attached photo is the one that controls the tailgate. One time while closing tailgate, the switch kept activating repeatedly for nearly a minute before it stopped. We live in the mountains and have been having heavy fog and rain. Contacted dealer and dealer stated that we would be responsible for repair. Contacted dealer on December 2, 2024 and dealer scheduled truck for repair December 18th 2024. Truck is not equipped with any indicator if tailgate comes open. Have to keep tailgate strapped shut at all times now.

  • Filed Jul 2019

    THE UNDERCOATING ON THE FRAME IS COMING OFF. THE FRAME IS ALREADY RUSTING. HOW LONG WILL IT BE BEFORE THE FRAME RUSTS THROUGH ? I TALKED TO ANOTHER PERSON WITH THE SAME TRUCK AND HE IS HAVING THE SAME PROBLEM.

  • Filed Mar 2019

    THIS TRUCK HAS HAD PROBLEMS WITH WATER GETTING INTO IT DURING HEAVY RAIN SINCE BOUGHT NEW. IT SEEMS TO OCCUR AT THE FRONT DOOR AREA NEAR THE WINDSHIELD. WHEN THE TRUCK IS OUTSIDE IN THE RAIN, THERE WILL BE WATER SOAKING ALL THE FLOOR BOARDS. THIS HAS LED TO STINKING ISSUES AND MOLD/MILDEW. THEY HAVE REFUSED TO FIX IT BECAUSE IT HASN'T BEEN RECALLED. IT HAS BEEN GETTING WORSE AND THE LAST VERY HEAVY DOWNPOUR WE HAD, THE FLOORBOARDS AND WINDSHIELD WERE FROZEN. THIS IS A $60,000 PLUS TRUCK. THIS IS RIDICULOUS THAT WE HAVE TO KEEP IT COVERED OR IN A CARPORT FOR FEAR OF WATER SEEPING INTO IT. THE VEHICLE IS PARKED IN HEAVY RAIN WHEN THIS HAPPENS.

  • Showing the 5 most recent of 10.
• Engine9

  1 involved a fire

  • Filed Jun 2025

    Blown head gasket. Engine hydro-locked.

  • Filed Oct 2024

    The contact owns a 2015 GMC Sierra 2500. The contact stated that while driving at 45-48 MPH, the check engine warning light illuminated. The contact used a vehicle scanner and retrieved diagnostic test code P0420 that indicated an efficient operating below threshold, and the contact cleared the code. Additionally, the contact stated while the exhaust filter was being cleaned, an unknown message was displayed. Upon clearing the code, the check engine warning light illuminated again. The vehicle was taken to the local dealer, who informed the contact that there was no warranty coverage. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 83,000.

  • Filed Jan 2024

    The contact owns a 2015 GMC Sierra 1500. The contact stated while driving 65 MPH, there was a loud pop in the engine compartment. The vehicle was steered to the side of the road where condensation was observed in the middle of the road. The vehicle was towed to a dealer where it was diagnosed that the radiator and transmission needed to be replaced. The vehicle was not repaired. On another occasion, while driving at approximately 20 MPH, the vehicle lost motive power. The vehicle was towed to a dealer where it was determined that the engine needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 170,000.

  • Filed Jul 2023

    While driving down the highway at 60 mph, the truck stumbled then completely died. After coasting to a stop truck would not restart. Towed to a repair shop to find out the Bosch CP 4 fuel pump exploded and contaminated the whole fuel system with metal shavings. A very expensive and lengthy repair. GM has known there is issues with these parts, but has failed to recall and fails to cover repair costs. Other manufacturers using the same part have issued recalls. While I was able to safely the get vehicle to the side of the road, the failure could’ve resulted in an accident causing personal injury or property damage.

  • Filed May 2021

    I was driving at approximately 40 MPH on a busy city street, I was going to be getting on the freeway where my speed would be in excess of 70MPH. Suddenly without any warning, my 2015 GMC Sierra 2500 HD Duramax died. I had no power at all which means no steering, brakes, etc. I was able to get the vehicle off the road with brute force. After the vehicle was towed to the dealership they inspected it and said that the Fuel Injector Pump failed which put metal throughout the whole fuel injection system (>$7000 repair). While doing some additional research on the Internet I find out that this is a common problem for the 2011-2016 GM Duramax trucks, because GM chose to use a Bosch Fuel Injector Pump which is not suitable for use with US low sulphur diesel fuel.

  • Showing the 5 most recent of 9.
• Service Brakes9

  3 involved a crash · 1 involved a fire

  • Filed Jul 2024

    Electric trailer brake control modular is malfunctioning on my 2015 GMC Sierra Denali 3500. Multiple of sources told me this is a common problem with this generation of GMC.

  • Filed Mar 2023

    Press the pedal feels soft vehicle slightly slows then pedal pressures up and truck instantly stops pedal stays hard for a long time having same issue on 15 tahoe

  • Filed Jan 2023

    The contact owns a 2015 GMC Sierra 1500. The contact stated her husband was driving when the vehicle in front of them applied the brakes unexpectedly, the driver depressed the brake pedal but failed to stop the vehicle due to the brake pedal being resistant/ rigid causing the vehicle to rear-end the other vehicle. The contact stated no warning light was illuminated. The air bags did not deploy. The contact stated no one was injured nor sought medical attention. A police report was filed. The driver was able to continue driving to their destination. The contact took the vehicle to the local dealer, where it was diagnosed that the vacuum pump had to be replaced. The dealer replaced the vacuum pump back in October of 2022. The vehicle was repaired but the second vacuum pump was also defective and the dealer replaced it on-site for a third time. The vehicle was repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 85,500. The contact stated that the failure speed was no more than 70 mph.

  • Filed Mar 2022

    Wife and daughter took the pickup to town. While returning home wife noticed a noise from the front end. She slowed down to turn and the whole tire with rotor came off the pickup causing the brake line to get ripped off and stating a fire. Damaged the running board and rocker panel along with the cv axle and other numerous parts.

  • Filed Jul 2020

    I WAS DRIVING IN MY CITY AND THE BRAKES WERE FINE PRIOR. I WAS COMING UP TO A STOP SIGN AND ALL OF THE SUDDEN MY BRAKE PEDAL WAS GOING TO THE FLOOR. I COULD NOT STOP WITHIN REASON. LUCKILY NO ONE WAS IN THE CROSSWALK OR I WOULD HAVE HIT THEM. I USED THE E-BRAKE AND MY EXHAUST BRAKE TO HELP SO ME SLOW DOWN. I WAS DOING ABOUT 35MPH. I TOOK THE TRUCK HOME IMMEDIATELY AS SAFE AS I COULD. I CALLED THE GM DEALERSHIP BY ME AND TOOK IT TO THEM. THEY ARE ONLY A FEW MILES AWAY AND I TOOK BACK ROADS TO AVOID TROUBLE. I WAS INFORMED BY THE GM DEALERSHIP THAT THERE WAS AN INTERNAL FAILURE OF THE BRAKE BOOSTER AND MASTER CYLINDER. $654.00 DOLLARS TO REPAIR MY 2500 DENALI TRUCK. I CALLED GM SERVICE ALREADY AND THEY INFORMED ME MY TRUCK WAS NOT UNDER THE RECALL. THIS ISSUE OBVIOUSLY EXISTS TO MORE VEHICLES THAN WHAT THEY SPECIFY AND YOU COULD LOSE BRAKES AT ANY MOMENT. GM NEEDS TO RECTIFY THEIR TRUCK BRAKE SITUATION. SOMEONE WILL END UP GETTING KILLED.

  • Showing the 5 most recent of 9.
• Air Bags8

  3 involved a crash

  • Filed Aug 2022

    The contact owns a 2015 GMC Sierra. The contact received notification of NHTSA Campaign Number 21V504000(Air Bag) however, the part to do the recall repair was unavailable. The local dealer was contacted and it was confirmed that the part was not available. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue and confirmed that the part was currently on backorder. The contact had not experienced the failure. The VIN tool confirms parts distribution disconnect.

  • Filed Aug 2022

    The contact owns a 2015 GMC Sierra. The contact received notification of NHTSA Campaign Number: 21V504000 ( Air Bags ) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Vin tool confirms parts distribution disconnect.

  • Filed Apr 2022

    2015 GMC SIERRA. CONSUMER WRITES IN REGARDS TO ROOF RAIL AIRBAG (RRAB) INFLATORS SAFETY RECALL. * RECALL REMEDY IS NOT YET AVAILABLE. * TS THE CONSUMER WAS INFORMED THE PARTS TO COMPLETE THE RECALL REPAIR WERE NOT YET AVAILABLE. THE CONSUMER REFERENCED RECALL N202324251. THE CONSUMER STATED THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME COMPLETING THE RECALL REPAIR.

  • Filed Aug 2018

    I WAS DRIVING A GMC SIERRA 2500 (2015) TRUCK ON A ROAD (SPEED LIMIT 65 MPH) AND WAS STOPPED TO MAKE A LEFT-HAND TURN INTO A STATE PART. A DRIVER HIT ME IN THE REAR AT A HIGH SPEED. THE POWDER FROM THE AIRBAG COMPARTMENTS FILLED THE TRUCK CAP BUT THE AIR BAGS DID NOT DEPLOY.

  • Filed Feb 2017

    SIDE AIRBAGS DEPLOYED WHILE PULLING OFF THE SHOULDER OF THE ROAD. GMC INFORMED ME THE VEHICLE WAS TRAVELING AT A SLOW SPEED AND AIRBAGS DEPLOYED BECAUSE FOOT WAS ON BRAKE AND ACCELERATOR AT SAME TIME.

  • Showing the 5 most recent of 8.
• Visibility4

  1 involved a fire

  • Filed Mar 2026

    The contact owns a 2015 GMC Sierra 2500. The contact stated that while the vehicle was parked, the defroster was activated, and there was smoke inside the vehicle before the rear glass shattered. No warning light was illuminated. The dealer was notified of the failure and informed the contact that the VIN was not under recall. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, and the contact was informed that the VIN was not under recall. The failure mileage was approximately 50,000.

  • Filed Mar 2023

    The contact owns a 2015 GMC Sierra. The contact stated that when doing the initial start, the rear of the vehicle began smoking and caught on fire. The contact turned off the vehicle and the fire settled however shortly after the rear window fractured. There were no injuries and no medical attention needed. There was no fire report. The contact had taken the vehicle to the dealer who stated that the window needed to be replaced and there was a Canadian recall (Manufacturer Number N192220470 ) for the rear windows defrost failing. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 152,000.

  • Filed Nov 2022

    The contact owns a 2015 GMC Sierra 2500. The contact stated while driving 35 MPH with the rear defroster activated, there was smoke coming from the window before the window cracked. The contact had taken the vehicle to a certified mechanic who determined that the rear defroster needed to be replaced. The vehicle had not been repaired. The manufacturer was made aware of the failure and confirmed that there was no recall or warranty coverage for the repair. The approximate failure mileage was 131,000.

  • Filed Feb 2015

    TL* THE CONTACT OWNS A 2015 GMC SIERRA 2500. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 10 MPH, THE DEFROSTER SYSTEM FAILED TO DEFROST THE WINDSHIELD. IN ADDITION, THE WINDSHIELD WIPERS CAUSED ICE BUILD UP. THE FAILURE RECURRED ON MULTIPLE OCCASIONS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 1,600.

• Visibility/Wiper4

  1 involved a fire

  • Filed Nov 2019

    TL* THE CONTACT OWNS A 2015 GMC SIERRA 2500. WHEN THE CONTACT AUTO STARTED THE VEHICLE, SMOKE APPEARED FROM THE REAR WINDOW AND A BURNING ODOR WAS NOTICED. THE CONTACT POWERED OFF THE ENGINE. THE VEHICLE WAS RESTARTED; HOWEVER, FIVE SECONDS LATER, THE REAR WINDOW SHATTERED WITHOUT WARNING OR AN IMPACT OCCURRING. THE CONTACT STATED THAT THE METAL THAT HEATED UP THE WINDOW CAUSED THE FAILURE. THE VEHICLE WAS NOT TAKEN TO A DEALER OR AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND PROVIDED CASE NUMBER: 9/5625662049. THE FAILURE MILEAGE WAS APPROXIMATELY 61,000.

  • Filed Feb 2019

    TL* THE CONTACT OWNS A 2015 GMC SIERRA 2500. THE CONTACT STATED THAT THE WINDSHIELD WIPERS FAILED TO FUNCTION. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE WIPER FUSE FAILED AND NEEDED TO BE REPLACED. THE CONTACT STATED THAT THE FUSE WAS REPLACED, BUT IT FAILED MULTIPLE TIMES. THE VEHICLE WAS NOT REPAIRED AND WAS NOT TAKEN TO A DEALER. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 138,000. THE VIN WAS NOT AVAILABLE.

  • Filed Sep 2016

    THE HEADLIGHTS ARE VERY POOR.IT IS EASY TO OVER DRIVE THEM.DARK ROADS OR RAIN OR SNOW IT IS DANGEROUS TO DRIVE.

  • Filed Aug 2015

    TL* THE CONTACT OWNS A 2015 GMC SIERRA 2500. THE CONTACT STATED THAT THE VISIBILITY IN THE HEADLAMPS WAS NOT ILLUMINATING PROPERLY IN ORDER TO BE ABLE TO VIEW THE ROAD. THE VEHICLE WAS TAKEN TO A DEALER WHERE THEY DID NOT DIAGNOSE OR REPAIR THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 1,200.

• Fuel System3

  • Filed Jul 2025

    The contact owns a 2015 GMC Sierra 2500. The contact stated while driving at an undisclosed speed, the vehicle lost automotive power and stalled. No warning lights was illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the Fuel Pump Module needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 129,000.

  • Filed Apr 2025

    The contact owns 2015 GMC Sierra 1500. The contact stated that while driving on several occasions at various speeds, the vehicle lost motive power. The contact stated that the check engine warning light was illuminated for approximately a month. The vehicle was taken to an independent mechanic and the contact was informed the high-pressure fuel pump was leaking fuel into the crank case, and the high-pressure fuel pump needed to be replaced. The vehicle was repaired; however, the failure reoccurred approximately 1 year and 5 months later. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the high-pressure fuel pump needed to be replaced. The vehicle was repaired. The contact stated that on several occasions while driving at various speeds, there was a loud sound coming from the engine compartment. The vehicle was towed to an independent mechanic where it was diagnosed that the fuel injectors on one side of the engine were not working properly, and that the fuel injectors needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 178,137.

  • Filed Dec 2022

    The contact owns a 2015 GMC Sierra 2500. The contact stated while her husband was driving approximately 20 MPH, the vehicle lost motive power and stalled. The vehicle lost power steering and power braking functionality. The contact stated that her husband did not see any warning lights being illuminated. The contact stated that her husband pulled over and stopped the vehicle. The vehicle could not be restarted. The contact stated that her husband purchased a fuel head for the diesel engine. The fuel head was replaced, the vehicle was started, and ran for less than a minute when the contact heard loosened nuts and bolts coming from the engine compartment. The vehicle stalled and was towed to an independent mechanic. The vehicle was diagnosed, and it was determined that the CP4 had to be replaced with a CP3 Conversion (Part 10904), fuel pump module assembly (Part N10021) and a Duramax Conversion kit (Part 10904). The vehicle had not been repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 136,000.

• Structure3

  1 involved a fire

  • Filed Mar 2022

    Wife and daughter took the pickup to town. While returning home wife noticed a noise from the front end. She slowed down to turn and the whole tire with rotor came off the pickup causing the brake line to get ripped off and stating a fire. Damaged the running board and rocker panel along with the cv axle and other numerous parts.

  • Filed Apr 2016

    WHEN AT SPEEDS OF ROUGHLY 50MPH SEATS VIBRATE. TRUCK HAS ROUGHLY 3000MILES AND THE FRAME, REAREND AND OTHER UNDERBODY COMPONENTS HAVE ALOT OF SURFACE RUST

  • Filed Feb 2015

    TL*THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT WHILE DESCENDING DOWN HILL AT NIGHT, THE LOW BEAM HEAD LIGHT PROVIDED POOR VISIBILITY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 5. UPDATED 03/30/15*LJ UPDATED 06/23/2015*JS

• Seat Belts3

  • Filed Apr 2020

    GMC, I AM EMAILING YOU IN REGARDS TO SAFETY FEATURES OF OUR 2015 GMC SIERRA DENALI NOT WORKING PROPERLY. THE REAR SEAT BELTS DO NOT LOCK AND THEY DO NOT RETRACT WITHOUT ASSISTANCE. WE ASKED THE DEALERSHIP LOCALLY IF IT IS RECALL RELATED ISSUE AND THEY SAID WE WOULD HAVE TO PAY TO HAVE THEM FIXED. THIS IS AN ISSUE WITH A SAFETY FEATURE AND IT SHOULD BE REPLACED/FIXED AT YOUR EXPENSE. WE HAVE FAMILY FRIENDS WHO WERE INVOLVED IN A COLLISION ON I70 WITH A BEAR, IN A GMC OR CHEVY AND THEIR LITTLE BOY ALMOST DIED BECAUSE HIS SEAT BELT FAULTED TO LOCK AND KEEP HIM SAFE. SINCE KNOWING THAT WAS A HUGE ISSUE, IT IS IMPORTANT TO US TO PURSUE GETTING THIS FIXED. IT HAS BEEN LIKE THIS SINCE WE BOUGHT THIS TRUCK IN 2016. WE LOOK FORWARD TO HEARING BACK FROM YOU REGARDING THIS MATTER. [XXX] [XXX] REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *CC *TR

  • Filed Feb 2020

    REAR PASSENGER SEAT BELT IS STUCK AND WILL NOT LET OUT SLACK OR TIGHTEN. CONSTANT. NO ACCIDENTS. IT WORKED PROPERLY WHEN WE BOUGHT THE VEHICLE. WE WERE UNAWARE OF ANY CHANGES OR OCCURRENCES THAT CAUSED IT

  • Filed Nov 2018

    PASSENGER SEAT BELT DOES NOT ALLOW FREEDOM OF MOVEMENT AFTER BREAKS ARE APPLIED WITH CONSTRICTION OF PASSENGER . ONLY WAY THAT OWNER OR PASSENGER CAN RELEASE THE SEAT BELT LOCK MECHANISM IS TO UNLOCK THE SEAT BELT WHILE VEHICLE IS IN MOTION CAUSING SAFETY HAZARD FOR THE PASSENGER. OWNER TOOK VEHICLE TO DEALERSHIP AND GIVEN ESTIMATE OF $950+ TO FIX THIS ISSUE.

• Wheels3

  • Filed Oct 2018

    THE TIRE SENSOR ALERTED OUTSIDE OF ALTOONA PA ON CORRIDOR 99. WE CALLED SERVICE, THEY CHANGED THE TIRE THAT MIRACULOUSLY HAD NOT BLOWN APART. THERE WAS A HAND SIZE BUBBLE ON THE INSIDE AND THE TIRE WAS SEPARATED AT THE RIM ALL AROUND IT. WE CALLED GOOD YEAR AND GOT A CLAIM # AND SETUP TO HAVE TIRE REPLACED IN FLORIDA. REMAINING TIRES ALL HAD SEPARATED ABOVE THE RIM AND COULD HAVE BLOWN. THESE TIRES WERE ROTATED AND CHECKED EVERY 5000 MILES. GOOD YEAR HAS THE TIRES AND SAYS THEY WILL INVESTIGATE. WE ARE CONCERNED THAT THIS COULD HAPPEN TO OTHERS THAT AREN'T AWARE OF THE "FLUKE" AS THE GY MANAGER CALLED IT. WE HAVE PIX OF AFFECTED TIRES BUT ARE UNSURE OF HOW TO UPLOAD THEM.

  • Filed Jan 2016

    I BOUGHT A NEW 2015 GMC DOUBLE CAB 2500 HD Z71 4X4 PICK UP TRUCK IN MAY 2015 IT HAS FACTORY EQUIPPED LT 265X70X17 BRIDGESTONE DURAVIS 7 PLY TIRES. I TOOK IT ON A UNLOADED 9000 MILE ROAD TRIP AFTER ABOUT 7000 MILES I NOTICED THE TRUCK WAS NOT HANDLING LIKE IT SHOULD IT WANTED TO GO STRAIGHT THRU CURVES IT WONDERED AND PULLED LEFT OR RIGHT. I TOOK IT TO THE GMC DEALER IN SPOKANE WASHINGTON THE FOUND THAT THE ALIGNMENT TOW-IN AND RIGHT SIDE CASTER WAS OFF. THIS IS NOT MY FIRST GM TRUCK THE LAST ONE I DROVE 93000 MILES AND NEVER NEEDED AN ALIGNMENT. WHILE DRIVING TO BEND OREGON THE PROBLEM REOCCURRED. I TOOK IT TO THE CHEVROLET GM DEALER IN BEND ALIGNMENT CHECK WAS OK THEY SAID IT MAY BE TIRE PRESSURE RELATED I AM USING THE RECOMMENDED COLD TIRE PRESSURE OF 65 PSI FRONT AND 70 PSI REAR UNLOADED NOT PULLING ANYTHING. UPON RETURNING TO PRESCOTT ARIZONA I TOOK IT TO TIMS GMC DEALER AND THE ALIGNMENT WAS OK. I EMAILED BRIDGSTONE THEY REFERRED ME TO THE PHOENIX BRIDGESTONE DEALER THEY SAID THE TIRES FOR THAT TRUCK SHOULD BE LT 245X75X17 FIRESTONE NOT BRIDGESTONE. THEY SAID THEY WOULD CHANGE THEM OUT BUT NEED AN OK FROM THE GMC DEALER. THE PRESCOTT TIMS GMC DEALER REFUSED TO ACCOMMODATE THE REQUEST. CHECKING WITH SEVERAL TIRE DEALERS IN PRESCOTT THE TIRE REQUIREMENTS FOR A 2500 TRUCK ARE A FULL 10 PLY TIRE NOT THE 7 PLY FACTORY INSTALLED TIRE. NOTE: THE BRIDGESTONE TIRE HAS A 2 PLY SIDEWALL..... A MICHELIN 10 PLY TIRE HAS A 3 PLY SIDEWALL THIS MAY BE PART OF THE PROBLEM. THE RIM WIDTH IS.....7.5............LOAD INDEX..121/118.......SPEED RATING........Q.... COLD PRESSURE OF 80 PSI

  • Filed Dec 2015

    HAVING TIRE ISSUES WITH MY NEW 2015 GMC 2500 4WD PICK UP THE BRIDGESTONE TIRES THAT ARE INSTALLED AS FACTORY EQUIPMENT SIZE 265X70X17 LOAD RANGE 'E' THEY HAVE A TENDENCY TO WONDER AND AT TIMES AND NOT FOLLOWING A CURVE. THE ALIGNMENT WAS OUT AND REALIGNED BY GMC AT 7000 MILES. THE PROBLEM DIDN'T GO AWAY. I CALLED A BRIDGSTONE DEALER AND HE SAID THE TIRE SIZE WAS INCORRECT THEY NEED TO BE 245X75X17 LOAD RANGE 'E' FIRESTONE TIRES.GM IS REFUSSING TO PUT ON THE CORRECT SIZE. I CHECKED WITH MICHELIN AND THEY RECOMMEND 245X75X17 LOAD RANGE 'E' TIRES. THE NEW 2016 GM 2500 VEHICALS HAVE 245X75X17 LOAD RANGE 'E'.

• Suspension3

  1 involved a crash

  • Filed Dec 2016

    TL* THE CONTACT OWNS A 2015 GMC SIERRA 2500. THE CONTACT STATED THAT WHILE DRIVING AT HIGH SPEEDS, THE VEHICLE VIBRATED VIOLENTLY WITHOUT WARNING. THE VEHICLE WAS TAKEN TO A DEALER BUT THE FAILURE WAS UNABLE TO BE DUPLICATED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 30.

  • Filed Sep 2016

    WHILE DRIVING ON DRY PAVEMENT, DRIVER MOVED KNOB ON VEHICLE TO SWITCH FROM AWD TO 2WD. VEHICLE WENT INTO AN IMMEDIATE SPIN WHICH COULD NOT BE CORRECTED. (OR MAYBE IT WAS BECAUSE OF WHAT HAPPENED NEXT). VEHICLE CAREENED OVER TWO LANES ("PRESUMABLY" WOULD NOT STOP - DRIVER DOES NOT RECALL TRYING TO HIT THE BRAKES REPEATEDLY OR AT ALL AS THE "NEXT PROBLEM" WAS IN FRONT OF DRIVER AND DRIVER WAS FOCUSING ON SURVIVAL).. DRIVER QUICKLY SMASHED THROUGH METAL SAFETY BARRIER AND CRASHED THROUGH TREES OVER A 30 FT EMBANKMENT INTO A RESERVOIR. DRIVER ABLE TO OPEN ROOF WHILE "STEERING" WITH LEFT HAND AND OPENING ROOF WITH RIGHT HAND AS DRIVER KNEW WATER WAS FAST APPROACHING. DRIVER SMASHED THROUGH TREES, TRUCK WAS DEMOLISHED BUT DRIVER WAS ABLE TO MAKE IT OUT OF CAR ALIVE AS CAR TOOK ON WATER THROUGH OPENED ROOF. VIN NUMBER REPORTS BRAKE ISSUES. DRIVER NOT AWARE OF "BRAKE RECALL" OR ANY ISSUES AND DID NOT REPORT BRAKE ISSUE AS AN ISSUE ON SCENE AS INCIDENT HAPPENED SO FAST AND DRIVER WAS ATTEMPTING TO STAY ALIVE AND WAS EVER FOCUSED ON THE NEXT 'OBSTACLE" AS IT WAS IN THE WAY PER DESCRIPTION HEREIN. AIRBAGS DEPLOYED AS EXPECTED AND DRIVER EXITED WATER-FILLED VEHICLE VIA OPENED ROOF UNHARMED. GMC SENT INVESTIGATORS OUT BUT NO REPORT HAS BEEN ISSUED TO DRIVER. CHUBB LEAD INVESTIGATOR ACCOMPANIED THE GMC INVESTIGATOR AND REPORTED "NO VEHICLE MALFUNCTION". AFTER THIS INCIDENT, AND READING OTHERS' PROBLEMS, DRIVER IS NOW NOT CONVINCED OF THAT REPORT.. NO MENTION OF BRAKE RECALL SEEMS TO HAVE BEEN REPORTED BY ANYONE BUT BY PUTTING VIN NUMBER INTO THIS DATABASE.

  • Filed Apr 2016

    WHEN AT SPEEDS OF ROUGHLY 50MPH SEATS VIBRATE. TRUCK HAS ROUGHLY 3000MILES AND THE FRAME, REAREND AND OTHER UNDERBODY COMPONENTS HAVE ALOT OF SURFACE RUST

• Diesel2

  • Filed Jul 2025

    The contact owns a 2015 GMC Sierra 2500. The contact stated while driving at an undisclosed speed, the vehicle lost automotive power and stalled. No warning lights was illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the Fuel Pump Module needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 129,000.

  • Filed Dec 2022

    The contact owns a 2015 GMC Sierra 2500. The contact stated while her husband was driving approximately 20 MPH, the vehicle lost motive power and stalled. The vehicle lost power steering and power braking functionality. The contact stated that her husband did not see any warning lights being illuminated. The contact stated that her husband pulled over and stopped the vehicle. The vehicle could not be restarted. The contact stated that her husband purchased a fuel head for the diesel engine. The fuel head was replaced, the vehicle was started, and ran for less than a minute when the contact heard loosened nuts and bolts coming from the engine compartment. The vehicle stalled and was towed to an independent mechanic. The vehicle was diagnosed, and it was determined that the CP4 had to be replaced with a CP3 Conversion (Part 10904), fuel pump module assembly (Part N10021) and a Duramax Conversion kit (Part 10904). The vehicle had not been repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 136,000.

• Tires2

  • Filed Sep 2023

    I reached out to manufacture via text, email and no response they just not responding on either Chanel..

  • Filed Apr 2016

    TL- THE CONTACT OWN GMC 3500 FOREST RIVER THUNDER XLR THUNDER BOLT. THE CONTACT WAS DRIVE THE VEHICLE ON THE INTERSTSE SOMEONE PULL ALONG SIDE OF HIS VEHICLE . THE CONTACT PULL OVER. THE REAR PASSENGER TIRE WAS SHRED.

• Seats2

  • Filed Feb 2016

    TL* THE CONTACT OWNS A 2015 GMC SIERRA. WHILE DRIVING APPROXIMATELY 60 MPH, THE VEHICLE BEGAN TO VIBRATE. THE LONGER THE VEHICLE WAS DRIVEN, THE MORE IT SHOOK. THE CONTACT TOOK THE VEHICLE TO THE DEALER SEVERAL TIMES, BUT NO FAILURE WAS FOUND. THE DEALER TEST DROVE THE VEHICLE AND IT DID NOT VIBRATE. THE DEALER REPLACED THE TIRES, TRANSMISSION, AND SHOCKS; HOWEVER,, THE FAILURE RECURRED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT STATED THE SEAT WARMERS ALSO FAILED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURES. THE APPROXIMATE FAILURE MILEAGE WAS 2,500.

  • Filed Feb 2015

    TL*THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT WHILE DESCENDING DOWN HILL AT NIGHT, THE LOW BEAM HEAD LIGHT PROVIDED POOR VISIBILITY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 5. UPDATED 03/30/15*LJ UPDATED 06/23/2015*JS

• Gasoline1

  • Filed Apr 2025

    The contact owns 2015 GMC Sierra 1500. The contact stated that while driving on several occasions at various speeds, the vehicle lost motive power. The contact stated that the check engine warning light was illuminated for approximately a month. The vehicle was taken to an independent mechanic and the contact was informed the high-pressure fuel pump was leaking fuel into the crank case, and the high-pressure fuel pump needed to be replaced. The vehicle was repaired; however, the failure reoccurred approximately 1 year and 5 months later. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the high-pressure fuel pump needed to be replaced. The vehicle was repaired. The contact stated that on several occasions while driving at various speeds, there was a loud sound coming from the engine compartment. The vehicle was towed to an independent mechanic where it was diagnosed that the fuel injectors on one side of the engine were not working properly, and that the fuel injectors needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 178,137.

• Engine And Engine Cooling1

  • Filed Jan 2024

    The contact owns a 2015 GMC Sierra 1500. The contact stated while driving 65 MPH, there was a loud pop in the engine compartment. The vehicle was steered to the side of the road where condensation was observed in the middle of the road. The vehicle was towed to a dealer where it was diagnosed that the radiator and transmission needed to be replaced. The vehicle was not repaired. On another occasion, while driving at approximately 20 MPH, the vehicle lost motive power. The vehicle was towed to a dealer where it was determined that the engine needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 170,000.

• Traction Control System1

  • Filed Jan 2016

    TL* THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT THE TRACTION CONTROL MONITOR LIGHT REMAINED ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE FAILURE MILEAGE WAS 363.

• Hydraulic1

  • Filed Feb 2015

    TL*THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT WHILE DESCENDING DOWN HILL AT NIGHT, THE LOW BEAM HEAD LIGHT PROVIDED POOR VISIBILITY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 5. UPDATED 03/30/15*LJ UPDATED 06/23/2015*JS

Safety ratings

NHTSA 5-Star Safety Ratings from government crash tests. Ratings can differ by cab style and 2WD/4WD.